Mechanical movement.



No. &11,868. PATENTED FEB. 6, 1906. H. J. PAARMANN. MECHANICAL MOVEMENT.

APPLIOATION PILBD DEO.21, 1903.

2 SHEETS-SHEET 1.

/V//l//W//l/ PATENTED PEB. 6, 1906.

H. J. PAARMANN. MECHANICAL MOVEMBN&

APPLICATION IILED DED. 21, 1903.

2 SHBETS-SHEET 2.

i ST

PATENT OFFICE..

HANS JAOOB PAARMANN, OF DAVENPORT, IOWA, ASSIGNOR TO H. F. BRAMMER MANUFACTURING COMPANY, OF DAVENPORT, IOWA, A

CORPORATION OF IOVVA.

MECHANICAL NlovEMENT Specification of Letters Patent.

Patented Feb. 6, 1906.

Application filed December 21, 1903. Serial No. l85,952

Te all wir/0777, it may concern:

Be it known that I, I-IANs JACOB PAAR- MANN, ol Davenport, in the county of Scott and. State of Iowa, have invented certain new and useful Improvements in Meehanical Movements and I do hereby declare that the following is 'a full, clear, and eXact description thereof, reference being had to the ac-` companying drawings, and to the letters of cillatory shalt, and means for swinging said` yoke from said rotary shaft embracing a ball' or sphere fixed to said rotary shaft and hav-' ing a peculiarly-shaped groove, which is traversed by a shoe swiveled on the yoke.

The improvements herein shown refer more particularly to the Construction of the yoke and the manner of mounting the same in the nechanism and connecting it with the oscillatory shalt. Said inprovenients have been designed` with a view to simplify said bearings and to enable the parts of the device to be readily assembled and dismantled.

The mechanical motion illustrated herein, as in the prior patent before referred to, constitutes the Operating mechanism for the rubbing device of a washing-machine, Whereby said rubbing device is given an alternate backward and 'forward partial rotation from a continuously-rotative shaft As shown. in the drawings, Figure l is a vertical section taken through the upper part of 'a Washing-machine, showing the Operating aforesaid prier patent and consist of a horizontal rotary shaft A; a vertical oscillatory shaft B, disposed at right angles to the shai t A, (constituting in the present instance the shank of the rubber B of the washing-machine O;) a yoke D, attached to the upper end of said shaft B; a ball E, afliXed to the end of the rotaryshaft A and provided with agroove E', and a shoe D', having loose connection with said yoke and adapted to traverse said groove. The shaft A is mounted in the vertical arms or standards F F' of a cast-metal frame F, which is carried by a support consisting in the present instanee oi the lid. C' of the washing-*machine The improvements constituting the present invention relate to the constructi on of the voke D and the inanner of mounting the same in the machine. In the Construction shown in the aforesaid prior patent said yoke is provided at its upper end. with an aperture adapted to receive a bear ing-stud on a supporting-[rame oi' the mechanism and at its lower end with an aperture adapted to receive the upper end of the oscillatory shaft.

In the present instanee the yoke D is provided at its upper end with an integral stud d, Whichengages a vertically-disposed bearing-aperture f in the upper end of a bracket F eXtending upwardly and forwardly from the supporting-hame. The lower end ol" said yoke is provided with an integral shank D eXtending downwardly through an opening c in the lid of the machine and provided at its lower end with a downwardly-opening socket which receives the shaft B of the rnb bing device B'. 'Said shank is provided above said socket-piece with an annular bear ing portion d', which is mounted in a split or two-part hearing of the rame F, one part f' of which is shown as made integral with said frame F and the other partf of which is made removable. The fixed portion of said two-part bearing extends at both sides of the opening c in the lid or support C' beyond the center of said opening, and the removable part of said bearing has the form of a flat plate, which is slpped between the side IOO parts of said hearing and isheld in place by a screw eXtending therethrougli into said lid or support. The side nargins of said plate are beveled and fit the undercut or beveled inner margins of the side parts of the stationary portion of the bearing. The inner end of said plate f 2 is provided with a semicylndric recess which opposes a like recess in the fixed part of said bearing, the two constituting a vertical bearing-aperture, in which is mounted the cylindrical bearing portion of the shank D The adjacent parts of the split bearing surrounding the bearing-aperture are thickened or provided with flanges f 3 to increase the vertical length of the bearing, and the shank is provided with an enlargement which rests on said two-part fiangef The parts are assembled by attaching the bearing-hame for the various parts of the mechanism, with the shaft A mounted therein, to the lid C' or other support, and the yoke is thereafter mounted in place, being inserted into place from below through the opening into the lid or support C' and between the arms or side parts of the stationary part of the lower bearing. Preparatory to the insertion of the yoke in place the ball E is shifted forwardly of its operative position, as shown in Fig. 5, to afford room to pass the upper end of the yoke past the same. The shoe D' is adjusted in the groove E of the ball E before the yoke has been shifted into its final position. Thereafter the yoke is forced into its final position with the stud d engaging its bearing-aperture and the shank-bearing d engaging the lower split bearing, after which the removable part f of the divided bearing is inserted and fastened in place.

Among the advantages of the constructi on herein shown are that the mechanism consi sts of fewer parts and for this reason may be more economically manufactured and more readily assembled, and the Construction as a whole is more durable and less likely to become out of order that when made of agreater number of parts.

I claim as Iny invention- The combination with a rotative shaft provided at its end with a spherical head having on its surface an irregular groove, and a frame in which said shaft has bearing, of an oscillatory yoke which oscillates about an aXis at right angles to the aXis of said rotative shaft and provided between its ends with a rotatively-mounted shoe which traverses said groove of the head, said yoke being provided at its upper end with an integral stud, and the frarne being provided with a socket engaged by said stud, and the lower end of the yoke being provided with a cylindric bearing adapted to eng'age a bearing in said frame and provided below said bearing portion with a downwardly-opening socket.

In testimony that I claim the foregoing as myinvention I affx my signature, in presence of two witnesses, this 14th day of December, A. D. 1903.

HANS J ACOB PAARMANN.

Witnesses:

JNo. BROOKMAN, H. G. BRAUNLICH. 

